JP5343480B2 - Hydraulic field control rotating electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a realistic hydraulic field-control rotary electric machine, which strikes a balance between the high performance such as an increase in torque and the operation up to a high-rotation range, and which has excellent controllability, a small iron loss, a reduced frictional torque due to rotation of a rotor, and a large flexibility of design. <P>SOLUTION: The hydraulic field-control rotary electric machine changes a field magnetic-flux of a rotor having an embedded magnet structure by using hydraulic pressure. The rotary electric machine is configured to integrally provide a hydraulic control part for changing the field magnetic-flux of the rotor at a bearing part of a bracket. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a hydraulic field control rotating electrical machine that uses hydraulic pressure to change a field magnetic flux of a rotor having an embedded magnet structure.

2. Description of the Related Art Conventional hydraulic field control rotating electrical machines include a rotor having an embedded magnet structure that has a double structure, each having a permanent magnet, and changes the field magnetic flux of the rotor using hydraulic pressure (for example, Patent Documents). 1).
FIG. 23 is a front sectional view showing an electric motor similar to the hydraulic field control rotating electric machine in the first prior art, which is shown in FIG.
In FIG. 23, the electric motor 20 includes a stator 21 having a stator winding 22, a rotor 23 having a permanent magnet, and the like.
The rotor 23 includes an inner rotor 24, an outer rotor 26 positioned radially outward, a shaft 29, and the like. Both the inner rotor 24 and the outer rotor 26 are rotor cores formed of laminated steel plates. The inner rotor 24 has permanent magnets 25a, 25b, and the outer rotor 26 has permanent magnets 27a1, 27a2, 27b1, 27b2.
By rotating the inner rotor 24 and the outer rotor 26 relative to each other using hydraulic pressure, the field magnetic flux of the rotor can be changed, and in a low rotation range, which is a problem of the electric motor. High torque and driving up to a high rotation range can be achieved.

Some conventional hydraulic field control rotating electrical machines divide a rotor having an embedded magnet structure into two in the axial direction and change the field magnetic flux of the rotor using hydraulic pressure (see, for example, Patent Document 2).
FIG. 24 is a front cross-sectional view of a hydraulic field control rotating electrical machine according to the second prior art, which is shown in FIG.
In FIG. 24, the rotor has a first field magnet movable portion 1 and a second field magnet movable portion 2 that are divided into two in the axial direction, and the first field magnet movable portion 1. The field magnet 8 is attached to the second field magnet movable portion 2.
By rotating the rotor divided into two relatively using hydraulic pressure, the field magnetic flux of the rotor can be changed, and the high torque in the low rotation range, which is a problem of the electric motor, The ability to achieve driving up to the rotation range is the same as that of the hydraulic field control rotating electrical machine disclosed in Patent Document 1.
However, in comparison with the hydraulic field control rotating electric machine of Patent Document 1 in which a specific design such as an oil passage and a sealing method is not shown while using the hydraulic mechanism, the hydraulic field control rotating electric machine of Patent Document 2 has a front sectional view and a side section. Realistic structures such as matching the shapes of the figures are shown.
In addition, if the rotor structure that requires driving up to a high rotation range is taken into consideration, the rotor gap diameter is limited to increase the centrifugal force, so the rotor with an embedded magnet structure is limited. There are many restrictions on providing the hydraulic chamber inside and outside and providing the hydraulic chamber inside thereof, and providing the hydraulic chamber inside the rotor divided in the axial direction has a greater degree of design freedom and is realistic.
In FIG. 24, A is a field-controlled rotating electrical machine, B is a stator, 3 is a rotor core, 3a is a yoke part of the rotor core, 4 is a shaft, 4a is a groove in the shaft, 5 is a piston, and 6 is a return. Spring, 7a is a first pin, 7b is a second pin, 10 is a sleeve, 10a is a slant groove in the sleeve, 11 is a ring plate, 12 is a laminated iron core, 13, 14 and 15 are O-rings, and 16 is a cap It is.

As a third prior art, there is a field-controlled rotating electrical machine that changes the field magnetic flux of a rotor having an embedded magnet structure that does not use hydraulic pressure (see, for example, Patent Document 3).
25A and 25B are views showing a rotor of a field-controlled rotating electrical machine that does not use hydraulic pressure in the third prior art, in which FIG. 25A is a perspective view and FIG. 25B is a front sectional view.
In FIG. 25, the rotor is divided into three in the axial direction, and the load-side fixed magnetic pole portion 30 and the anti-load-side fixed magnetic pole portion 32 fixed to the shaft, and the relative rotation with respect to both the fixed magnetic pole portions 30 and 32. And a permanent magnet 36 is attached to each of the magnetic pole portions 30, 31, 32.
The fixed magnetic pole portions 30 and 32 on both sides are fixed to the respective fixed plates, and the central movable magnetic pole portion 31 is fixed to the movable plate. Centrifugal weight guide grooves 34a and 35a are provided on the fixed plate and the movable plate, and the centrifugal weight guide is provided. The movable magnetic pole portion 31 is restricted in relative rotation angle with respect to the fixed magnetic pole portions 30 and 32 by the centrifugal weight 33 attached to the grooves 34a and 35a.
The centrifugal weight 33 provided in such a rotor is positioned on the rotating shaft side by the urging of the torsion spring when the rotation speed of the rotor is low, and the N poles of the fixed magnetic pole parts 30 and 32 and the movable magnetic pole part 31 The S poles are aligned in the axial direction, and the field magnetic flux is maximized. When the rotational speed of the rotor increases, the centrifugal force acting on the centrifugal weight 33 exceeds the urging force of the torsion spring, the centrifugal weight 33 moves toward the outer periphery of the rotor, and when the centrifugal weight reaches the outermost side, As shown in FIG. 25, the N and S poles of the fixed magnetic pole portions 30 and 32 and the movable magnetic pole portion 31 are alternately positioned in the axial direction, and the field magnetic flux is in a minimum state. As described above, by changing the field magnetic flux of the rotor using the centrifugal force generated by the rotation of the rotor, high torque in the low rotation range and driving up to the high rotation range can be achieved.
The field-controlled rotating electrical machine disclosed in Patent Document 3 is inferior in controllability to change the field magnetic flux because it does not use hydraulic pressure. However, when the field magnetic flux is at a minimum, the magnetic flux generated from the permanent magnet 36 is the fixed magnetic pole portion 30. , 32 and the movable magnetic pole portion 31 are axially short-circuited so that not only the magnetic flux interlinked with the stator winding is canceled, but also the magnetic flux itself passing through the stator core can be reduced and generated in the stator core. This is superior in that the iron loss can be further reduced.
In FIG. 25, 35 is a movable plate, 35b is a torsion spring mounting hole of the movable plate, and Φ is an image of magnetic flux.

The fourth conventional technique is not limited to a hydraulic field control rotating electrical machine, but also includes an embedded magnet type rotating electrical machine in which the shape of a permanent magnet mounting hole provided in a rotor core having an embedded magnet structure is improved (for example, , See Patent Document 4).
FIG. 26 is a view showing a rotor core of an embedded magnet type rotating electric machine in the fourth prior art, (a) is a view showing the shape of a permanent magnet mounting hole, and (b) is a portion A in (a). FIG.
In FIG. 26, permanent magnets 41a and 41b are mounted in permanent magnet mounting holes 42a and 42b formed in a substantially V shape provided in the rotor core so that the magnetization directions face each other or face each other. At both ends of the permanent magnet mounting holes 42a and 42b, permanent magnet receiving surfaces 40a and 40b for restricting the movement of the permanent magnet are formed, and an outer connecting portion 38 and an inner connecting portion 39 are provided to reduce leakage magnetic flux. Is formed.
As the leakage flux increases, the field magnetic flux decreases and the maximum torque that can be generated by the rotating electrical machine decreases. Therefore, the outer connecting portion 38 and the inner connecting portion 39 are desired to have a thin shape, but the centrifugal force due to the rotation of the rotor is reduced. On the other hand, the inner connecting portion 39 mainly holds the pole shoe portion 43 of the rotor core sandwiched between the permanent magnet mounting holes 42a and 42b, and the outer connecting portion 38 mainly has a role of holding the permanent magnet. is there. Furthermore, the shape around the outer connecting portion has a great influence on the terminal voltage generated by the rotating electrical machine and the harmonics of torque fluctuation. In FIG. 26, reference numeral 37 denotes an inner connecting end portion.

As described above, the conventional hydraulic field control rotating electric machine achieves high torque in the low rotation range and driving up to the high rotation range by providing a movable part in the rotor and rotating it using hydraulic pressure. Yes. In addition, the shape of the conventional permanent magnet mounting hole provided in the rotor core of the embedded magnet structure reduces the leakage magnetic flux, withstands centrifugal force at high rotation, It is determined in consideration of adjustment.
Japanese Unexamined Patent Publication No. 2004-072978 (FIG. 1) JP 2006-262600 A (FIG. 1) Japanese Patent Laying-Open No. 2007-259531 (FIG. 6) Japanese Patent Laying-Open No. 2005-051982 (FIG. 3)

  The conventional hydraulic field control rotating electrical machine shown in Patent Document 1 has a rotor with an embedded magnet structure divided into two inside and outside, and a hydraulic chamber is provided on the inside thereof. Not right. The radial cross-sectional views, axial cross-sectional views, and hydraulic mechanism diagrams shown in the literature also have no conformity in shape and are schematic diagrams for explaining the structure, so they refer to practical issues such as oil passages and sealing methods. Absent.

  The conventional hydraulic field control rotating electrical machine shown in Patent Document 2 is provided with a hydraulic chamber inside the rotor divided in the axial direction, so that the design freedom is large and a realistic structure is shown. However, there are still practical problems such as the method of injecting and releasing oil and the sealing method and the friction torque generated.

  The conventional field-controlled rotating electrical machine that does not use hydraulic pressure shown in Patent Document 3 is inferior in controllability to change the field magnetic flux because the field magnetic flux of the rotor is changed using the centrifugal force generated by the rotation of the rotor.

Although the shape of the permanent magnet mounting hole provided in the rotor core of the conventional embedded magnet type rotating electric machine shown in Patent Document 4 is highly effective in reducing leakage magnetic flux, it is suitable for driving up to a high rotation range. It is not designed to withstand the centrifugal force caused by the rotation of the rotor.
The present invention has been made in view of such problems, and achieves both high performance such as torque increase and operation up to a high rotation range, good controllability, iron loss, and rotation of the rotor. It is an object of the present invention to provide a hydraulic field control rotating electrical machine that has a small friction torque, is realistic, and has a high degree of design freedom.

In order to solve the above problems, the present invention is configured as follows.
The invention described in claim 1
A fixed portion; and a rotating portion that rotatably supports the shaft via a bearing on the fixed portion,
The fixing portion includes a stator and a bracket to which the stator is fixed ,
In the hydraulic field control rotating electrical machine, the rotating unit includes a rotor having an embedded magnet structure that can change a field magnetic flux using hydraulic pressure.
The rotor is
A divided magnetic pole portion that rotates integrally with the shaft;
A hydraulic mechanism that is interposed between the magnetic pole portion and the shaft and rotates at least one of the magnetic pole portions with respect to the shaft using the hydraulic pressure;
With
A hydraulic control unit that changes the field magnetic flux of the rotor by supplying oil to the hydraulic mechanism through an oil passage provided in the shaft is provided inside the bearing portion of the bracket that supports the bearing. it characterized by providing.
The invention according to claim 2
The hydraulic control unit includes a control valve for conducting block the oil to the hydraulic mechanism is provided in the middle portion of the oil passage from the outside to the control valve, and accumulates the guided externally oil accumulator with oil a pressure accumulating chamber is supplied to the control valve, and you characterized as having.
The invention according to claim 3
Wherein the hydraulic control unit, the hydraulic pressure of the oil derived from the outside you characterized in that a check valve for the oil to decompress the hydraulic pressure flowed into the other oil passage when it exceeds a predetermined hydraulic pressure.
The invention according to claim 4
The magnetic pole is 3 divided in the axial direction, on both sides of the magnetic pole portion is fixed to the shaft, the center of the magnetic pole portion is rotated relative to the shaft by the hydraulic mechanism you characterized Rukoto.
The invention according to claim 5
The rotor shall be the characterized in that a shim between the magnetic pole portions relative rotation.

The invention according to claim 6
The material of the shim is a magnetic material, characterized in that it is a iron or steel iron alloy.
The invention according to claim 7
A fitting part that is interposed between the hydraulic control unit and the shaft and supplies oil supplied from the hydraulic control unit to an oil passage provided in the shaft ;
The fitting part may compare the fitting clearance between the shaft, characterized by providing a large fitting gap between the fitting component holder of the bracket that holds the outer diameter of the fitting parts .
Further, the invention according to claim 8 is
The shaft is
A plurality of fixed side walls provided along a predetermined interval on the outer periphery of the shaft and extending along the shaft;
The hydraulic mechanism is
A cylindrical movable plate that slidably encloses the plurality of fixed side walls;
A plurality of movable side walls provided along the inner peripheral portion of the movable plate at predetermined intervals, extending along the shaft, and slidable with respect to the outer peripheral portion of the shaft;
And the oil is supplied to a hydraulic chamber formed by the outer peripheral portion of the shaft, the fixed side wall, the inner peripheral portion of the movable plate, and the movable side wall, and the movable side wall moves to move the magnetic pole portion. Rotate with respect to the shaft,
Wherein the movable side wall, you characterized by chamfering to prevent close contact with the wall surface of the fixed side walls have been made.
The invention according to claim 9 is
Some from the hydraulic control unit of the oil supplied to the hydraulic mechanism, after being subjected to the lubrication of the sliding portion between the magnetic pole portions, characterized in that it is discharged to the outside of the rotor .
The invention according to claim 10 is
Some from the hydraulic control unit of the oil supplied to the hydraulic mechanism is released outside of the rotor, characterized in that it is further discharged to the outside of the rotary electric machine.

The invention according to claim 11 is
Some of the oil supplied from the hydraulic control unit to the hydraulic mechanism, characterized in that it is used to lubricate the bearings.
Further, the invention according to claim 12 is
A fitting part that is interposed between the hydraulic control unit and the shaft and supplies oil supplied from the hydraulic control unit to an oil passage provided in the shaft;
The oil pressure control unit is used to lubricate the side of the bearing is provided, characterized in that it is provided from the fitting gap between the fitting part and the shaft.
The invention according to claim 13 is
Oil the hydraulic control unit is used to lubricate the opposite side of the bearing to the side of the bearing to be provided, after being guided in the shaft to the bearing portion, the inner space of the rotary electric machine of the surfaces of the bearing the side surface is released to a surface opposite that to, characterized in that it is used to lubricate the said bearing.
The invention as set forth in claim 14
The oil from the bearing on the side where the hydraulic control unit is provided is used to lubricate the opposite bearing, it is released to the outside of the rotor attached to the rotor, scattered by the centrifugal force, the bearing it characterized in that Ru is guided to the surface opposite to the inner space side of the surface of the rotating electrical machine of the oil introduction port by Ri surface of the bearing formed in the bearing portion of the bracket which supports the.
The invention according to claim 15 is
Central magnetic pole portion of the rotor, the hydraulic mechanism in a state where not performed the operation for changing the field magnetic flux, characterized by gentle rotation in reduced 磁側.

The invention according to claim 16
Torque for gently rotating the magnetic pole portion of the center of the rotor, characterized in that made with the suction force of the permanent magnet between the opposed magnetic pole portions.
The invention according to claim 17
A reciprocating oil passage for guiding oil to the hydraulic mechanism, characterized in that provided in the shaft.
The invention according to claim 18
The rotor, the reciprocating fluid passage, characterized in that provided outside and the inside of the mounted cylindrical parts into the shaft.
The invention as set forth in claim 19
The rotor, the orifice for adjusting the leakage of oil to other of the hydraulic chambers adjacent from the hydraulic chamber, characterized in that provided in the hydraulic mechanism.
The invention according to claim 20 provides
Serial oil to the side of the bearing hydraulic control unit is provided to be used for lubrication of the opposite bearing, the surface opposite to the inner space side of the surface of the rotating electrical machine of the surfaces of the inside of the shaft the bearing in the middle of the oil passage leading to, it characterized in that an orifice for adjusting a leakage of oil.

The invention as set forth in claim 21
Prior to said orifice, characterized in that a filter.
The invention as set forth in claim 22
Wherein the increasing磁側oil passage from the hydraulic mechanism guides the oil to the hydraulic mechanism, the reduced磁側oil passage for guiding oil to the hydraulic control unit from the hydraulic mechanism, characterized in that provided in the shaft.
Further, the invention described in claim 23 is
The magnetic pole part at the center of the rotor of the rotating electrical machine rotates gently to the demagnetization side, and the N pole and the S pole do not cancel completely, and rotate so as to be the minimum field magnetic flux that operates as a rotating electrical machine. it characterized in that it is limited in scope.
The invention as set forth in claim 24 provides
Permanent magnets mounted on the rotor, characterized in that mounted on the rotor core with resin parts adjacent to the radially outward.
The invention as set forth in claim 25 provides
The resin component is a plane in close contact with the permanent magnet, with a curved surface in close contact with the outer connecting portion of the mounting hole of the rotor core, characterized in that it is formed a cross-sectional shape.

The invention according to claim 26 provides
The shape of the outer joint portion of the mounting hole of the rotor core, on which the permanent magnet and the resin component adjacent to the outer side in the radial direction are mounted, is characterized in that there is no corner portion and there is a portion formed in a uniform width. The
In addition, other inventions described in the present application are:
The permanent magnet attached to the rotor is a rotor having an embedded magnet structure characterized in that the permanent magnet is attached to the rotor core together with resin parts adjacent to the outer side in the radial direction of the permanent magnet.

The present invention has the following effects.
(1) According to the invention described in claim 1,
In a hydraulic field control rotating electrical machine that uses hydraulic pressure to change the field magnetic flux of a rotor having an embedded magnet structure, the hydraulic control unit that changes the field magnetic flux of the rotor is arranged around the bearing support portion of the bracket that constitutes the fixed portion. In addition, since it is provided as a single unit, it achieves both high performance such as increased torque and operation up to a high rotation range, and it has good responsiveness, and the oil passage that communicates with the rotating electrical machine only keeps the oil pressure constant. Therefore, a pipe loss to the rotating electrical machine due to rapid pressure increase / decrease can be avoided, and a hydraulic field control rotating electrical machine with good controllability can be provided.
(2) According to the invention described in claim 2,
The hydraulic control unit has a pressure accumulating chamber for accumulating oil introduced from the outside and a control valve for conducting and shutting off the hydraulic pressure to the rotor, so that the pressure accumulating chamber is accumulative for the operation of the control valve. Since oil can be supplied instantaneously, the maximum output of the oil pump can be saved, and a hydraulic field control rotating electrical machine with good response can be provided.
(3) According to the invention described in claim 3,
Since a check valve is provided in the hydraulic control unit as a protection mechanism against excessive hydraulic pressure of oil guided from the outside, the hydraulic control unit can be protected against excessive hydraulic pressure accompanying the start / stop of an oil pump or other hydraulic equipment. A hydraulic field control rotating electrical machine can be provided.
(4) According to the invention described in claim 4,
The rotor has a magnetic pole portion that is divided into three in the axial direction, and a hydraulic mechanism that relatively rotates the magnetic pole portion. The magnetic pole portions on both sides are fixed to the shaft, and the central magnetic pole portion rotates with respect to the shaft. Therefore, the central magnetic pole part is not attracted to one of the magnetic pole parts on both sides, an equal oil film is formed on the sliding surfaces on both sides, and the rotor is rotated with a minimum hydraulic pressure. It is possible to provide a hydraulic field control rotating electrical machine having a large design freedom and a realistic structure.
(5) According to the invention described in claim 5,
Since the rotor is provided with a shim between the relatively rotating magnetic pole portions, it is possible to provide a hydraulic field control rotating electrical machine capable of preventing the permanent magnet from jumping out to the sliding surface and contact during relative rotation. it can.

(6) According to the invention described in claim 6,
Since the shim is made of a magnetic material and is made of iron or iron alloy, it has excellent wear resistance, and when the field magnetic flux is at a minimum, the magnetic flux generated from the permanent magnet is short-cut in the axial direction. Since the magnetic flux passing through the stator core is further reduced, a hydraulic field control rotating electrical machine with a small iron loss generated in the stator core can be provided.
(7) According to the invention described in claim 7,
The fitting part that supplies oil to the shaft from the bearing part on the oil injection side has a larger fitting gap with the holding part that holds the outer diameter of the fitting part than the fitting gap with the shaft. The fitting part can move so as to maintain the coaxiality that can hold the minimum oil film with the shaft against the deviation of the inner diameter of the holding part and the shaft, and the friction torque accompanying the rotation of the rotor is small. A hydraulic field control rotating electrical machine can be provided.
(8) According to the invention described in claim 8,
Since the chamfering to prevent the wall surface from adhering to the side wall in the rotational direction of the hydraulic chamber of the rotor is performed, a hydraulic field control rotating electrical machine that operates reliably without impairing the area of the hydraulic pressure receiving surface. Can be provided.
(9) According to the invention described in claim 9,
Part of the oil used in the hydraulic mechanism is discharged to the outside of the rotor after being used for lubrication of the sliding part between the magnetic pole parts, so there is no fear of oil leakage to the outside of the rotor, and sliding It is possible to provide a hydraulic field control rotating electrical machine that can supply oil for forming an oil film on a moving surface and can be driven with a minimum hydraulic pressure.
(10) According to the invention of claim 10,
Part of the oil used in the hydraulic mechanism is discharged to the outside of the rotor and further discharged to the outside of the rotating electrical machine, so that the oil can circulate between the oil pump and the rotating electrical machine and can be continuously operated. A hydraulic field control rotating electric machine can be provided.

(11) According to the invention of claim 11,
A part of the oil used in the hydraulic mechanism is used for lubrication of the bearing, so that it is not necessary to enclose grease in the bearing, and a hydraulic field control rotating electrical machine with a small friction torque accompanying the rotation of the rotor is provided. it can.
(12) According to the invention of claim 12,
Since the oil used for lubricating the oil injection side bearing in the shaft is provided from a fitting part that supplies oil to the shaft and a fitting gap between the shaft, the fitting part is the smallest oil film with the shaft. Can be maintained, and a hydraulic field control rotating electrical machine with a small friction torque accompanying the rotation of the rotor can be provided.
(13) According to the invention of claim 13,
The oil used for lubricating the bearing that is not on the side of oil injection into the shaft is filled with grease because the oil that has been guided through the shaft to the bearing is released to the back of the bearing and used for lubrication of the bearing. Therefore, it is possible to provide a hydraulic field control rotating electrical machine in which the friction torque accompanying the rotation of the rotor is small.
(14) According to the invention described in claim 14,
Oil used for lubrication of the bearing that is not on the side of oil injection into the shaft is released to the outside of the rotor, adheres to the rotor, scatters due to centrifugal force, and is guided from the wall surface at the top of the bearing to the bearing back. Therefore, it is not necessary to enclose grease in the bearing, and it is possible to provide a hydraulic field control rotating electrical machine that has a small friction torque accompanying the rotation of the rotor.
(15) According to the invention described in claim 15,
The magnetic pole portion at the center of the rotor gently rotates toward the demagnetization side when the hydraulic mechanism is not operating to change the field magnetic flux. Since the induced voltage is lowered, it is possible to provide a hydraulic field control rotating electrical machine that can easily prevent secondary disasters such as dielectric breakdown.

(16) According to the invention described in claim 16,
Since the torque for gently rotating the magnetic pole part at the center of the rotor is generated by the attractive force of the permanent magnet between the opposing magnetic pole parts, the hydraulic pressure does not require a special device for preventing the secondary disaster. A field-controlled rotating electrical machine can be provided.
(17) According to the invention of claim 17,
Since the rotor is provided with a reciprocating oil passage in the shaft for guiding oil to a hydraulic mechanism that relatively rotates the magnetic pole portion, a hydraulic field control rotating electrical machine having good controllability for both magnetizing and demagnetizing is provided. Can do.
(18) According to the invention of claim 18,
Since the rotor is provided with the reciprocating oil passage on the outside and inside of a cylindrical part mounted in the shaft, a complicated and inexpensive machining of the shaft is not required, and an inexpensive and realistic hydraulic field control rotating electric machine is provided. Can be provided.
(19) According to the invention of claim 19,
The rotor is provided with an orifice for adjusting oil leakage from the magnetizing hydraulic chamber to the demagnetizing hydraulic chamber in the hydraulic mechanism. It is possible to provide a hydraulic field control rotating electrical machine that can adjust the speed of gentle rotation toward the demagnetization side.
(20) According to the invention of claim 20,
The oil used for lubrication of the bearing that is not on the oil injection side into the shaft is provided with an orifice that adjusts oil leakage in the middle of the oil passage that extends from the shaft to the back of the bearing. Thus, it is possible to provide a hydraulic field control rotating electrical machine capable of adjusting the amount of oil to the bearing while maintaining the hydraulic pressure of the hydraulic chamber.

(21) According to the invention of claim 21,
Since a filter is provided in front of the orifice, it is possible to provide a highly reliable hydraulic field control rotating electrical machine against clogging resistance of the orifice.
(22) According to the invention of claim 22,
The rotor has a magnetizing side oil passage that guides oil to a hydraulic mechanism that relatively rotates the magnetic pole part, and a demagnetization side oil passage that releases oil to the outside of the rotor. A hydraulic field control rotating electric machine can be provided.
(23) According to the invention of claim 23,
The magnetic pole part at the center of the rotor of the rotating electrical machine rotates gently to the demagnetizing side, and rotates so that the N pole and the S pole do not completely cancel each other and become the minimum field magnetic flux that operates as a rotating electrical machine. Since the range is limited, it is possible to provide a hydraulic field control rotating electrical machine that can be driven even when the hydraulic control unit fails.
(24) According to the invention of claim 24,
Since the permanent magnet attached to the rotor is attached to the rotor core together with the resin parts adjacent to the outer side in the radial direction of the permanent magnet, the centrifugal force acting on the permanent magnet is received by the permanent magnet receiver outside the permanent magnet attachment hole. It is possible to provide a hydraulic field control rotating electrical machine that does not support locally on the surface, avoids stress concentration that causes cracking of the permanent magnet, and can be operated up to a higher rotation range. Further, it is possible to provide a hydraulic field control rotating electrical machine that achieves both high performance such as torque increase and operation up to a high rotation range.
(25) According to the invention of claim 25,
Since the resin component is formed in a cross-sectional shape with a flat surface that is in close contact with the permanent magnet and a curved surface that is in close contact with the outer connecting portion of the mounting hole of the rotor core, centrifugal force acting on the permanent magnet is applied to the outer connecting portion. Therefore, it is possible to provide a hydraulic field control rotating electrical machine that can be converted into a tensile force of a part and can be operated up to a higher rotational range.

(26) According to the invention of claim 26,
The shape of the outer joint portion of the mounting hole of the rotor core on which the permanent magnet and the resin component adjacent to the outer side in the radial direction of the permanent magnet are mounted has a corner and has a portion formed in a uniform width. While the leakage magnetic flux is kept small, the tensile force acting on the outer joint portion does not concentrate on a part, and acts uniformly as the maximum tensile stress on the portion formed in the uniform width of the outer joint portion, It is possible to provide a hydraulic field control rotating electric machine that can be operated up to a higher rotation range.
(27) According to another invention described in this application ,
Since the permanent magnet attached to the rotor is attached to the rotor core together with the resin parts adjacent to the outer side in the radial direction of the permanent magnet, the centrifugal force acting on the permanent magnet is received by the permanent magnet receiver outside the permanent magnet attachment hole. It is possible to provide a rotor having an embedded magnet structure that is not locally supported on the surface, avoids stress concentration that causes cracking of the permanent magnet, and can be operated up to a higher rotation range.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view showing a hydraulic field control rotating electrical machine according to a first embodiment of the present invention, which is used for a vehicle driving motor or a generator.
In FIG. 1, the rotating electrical machine includes a fixed portion and a rotating portion in which the shaft 101 is rotatably supported by the fixed portion via a load-side bearing 53 and an anti-load-side bearing 54.
The fixed portion includes, for example, a stator 60 having a stator winding 62 mounted on a stator core 63 disposed on an inner peripheral surface of a cylindrical frame 65, a load side bracket 51, and an anti-load side bracket. 52 or the like.
The rotating part has a rotor 100 of an embedded magnet structure that can change a field magnetic flux using hydraulic pressure.
Energization of the stator winding 62 is performed via the lead wire 61. The stator 60 is fastened to the load-side bracket 51 with a stator fastening bolt 64, and the anti-load-side bracket 52 is fastened to the load-side bracket 51 with a bolt (not shown) together with a cylindrical frame 65, for example. ing.
The rotor 100 is rotatably held by a load-side bracket 51 and an anti-load-side bracket 52 via a load-side bearing 53 and an anti-load-side bearing 54 installed on the shaft 101, and is provided with hydraulic pressure provided inside the rotor. Oil pressure can be supplied to the mechanism 90 to change the field magnetic flux. An encoder unit 57 for detecting the rotational position of the rotor 100 is installed on the opposite side of the shaft 101.
The bearing portion of the non-load-side bracket 52 is integrally provided with a hydraulic control unit 70 that changes the field magnetic flux of the rotor 100 and is close to the rotor 100. The compatibility with the operation up to the high rotation range is good and the responsiveness is good, and the oil passage connected to the rotating electrical machine only needs to keep the oil pressure constant. This is a hydraulic field control rotating electrical machine that can avoid loss and has good controllability.
The anti-load side bracket 52 includes a high-pressure oil inlet 48 that supplies oil from an external oil pump (not shown) to the hydraulic control unit 70, a return oil outlet 49 that returns oil from the hydraulic control unit to the oil pump, and a rotor. A discharge oil outlet 50 is provided for discharging oil released into the rotary electric machine from 100 to the oil pump. The oil can circulate between the oil pump and the rotary electric machine and can be operated continuously. The load-side oil seal 55, the anti-load-side oil seal 56, and the cover 58 prevent the oil released to the inside of the rotating electrical machine from flowing out to the outside.
The anti-load side oil seal 56 is formed by baking a rubber film on a steel ring, and seals the oil and fixes a fitting component 71 that supplies oil to the shaft 101 in the axial direction. In FIG. 1, 48 is a high pressure oil inlet, 49 is a return oil outlet, and 110 is a cylindrical part.

FIG. 2 is a front sectional view of the rotating electrical machine shown in FIG.
In FIG. 2, a substantially V-shaped permanent magnet mounting hole provided in the rotor core 104 is adjacent to the outer side in the radial direction of the permanent magnet 102 so that the permanent magnet 102 faces or backseats the magnetization direction. It is mounted together with the resin component 103 to form a 10-pole magnetic pole.
The outer peripheral shape of the rotor core 104 is not a perfect circle, and the time variation of the induced voltage induced in the stator winding 62 is brought close to a sine wave, so that the gap between both ends of the pole shoe 104p of the rotor core 104 is large. The shape becomes. A hydraulic mechanism 90 that changes the field magnetic flux of the rotor is provided on the inner periphery of the rotor core 104. In FIG. 2, 105 is a movable plate, 107 is a fixed plate on the opposite side of load, and 108 is a bolt.

FIG. 3 is a configuration diagram illustrating a hydraulic pressure control unit of the rotating electrical machine according to the first embodiment of the present invention.
In FIG. 3, the hydraulic pressure control unit that changes the field magnetic flux of the rotor includes a pressure accumulating chamber 70a for accumulating oil introduced from the outside, and a control valve 76 for conducting and blocking the hydraulic pressure to the rotor.
The pressure accumulating chamber 70a can store high-pressure oil introduced from an oil pump (not shown) within a specified amount, and can instantaneously supply the oil accumulated in the pressure accumulating chamber 70a in response to the operation of the control valve 76. The maximum output of the oil pump can be saved, and the field magnetic flux of the rotor can be changed with good response to the adjacent rotor. Further, it also has a role of smoothing the hydraulic pulsation of the high-pressure oil introduced from the oil pump by the expansion and contraction of the spring 74.
The control valve 76 can move the spool 77 in the axial direction by adjusting the energization current to the solenoid coil 78, and the high-pressure oil that has entered from the high-pressure oil inlet 70b is supplied to the magnetizing side oil inlet 70e. Or it can guide to the demagnetization side oil introduction port 70f.
The state shown in FIG. 3 shows a state where the solenoid coil 78 is not energized and the field magnetic flux of the rotor is demagnetized. Since the solenoid coil 78 that is not energized does not generate a pressing force against the spool 77, the spool 77 is pressed against the solenoid coil 78 side by the pressing force of the return spring 79. In this state, the oil passage of the high pressure oil inlet 70d is connected to the demagnetization side oil inlet 70f, so that the high pressure oil that has entered from the high pressure oil inlet 70b is indicated by the high pressure oil flow Ph. Through the demagnetization side oil introduction port 70f, the magnetic field flux of the rotor is demagnetized by being guided to a demagnetization side hydraulic chamber of the rotor (not shown).
Further, the oil pushed out from the magnetizing side hydraulic chamber of the rotor, as shown by the return oil flow Pl, passes through the magnetizing side oil return port 70g from the magnetizing side oil introduction port 70e, and then returns to the return oil outlet 70c. And returned to an oil pump (not shown). In FIG. 3, 70h is a demagnetization side oil return port, 72 is a piston, and 75 is a spring holding part.

4A and 4B are explanatory views showing the hydraulic pressure control unit shown in FIG. 3, wherein FIG. 4A shows a state in which the field magnetic flux of the rotor is increased, and FIG. 4B shows a state of the field magnetic flux of the rotor. Is shown.
As shown in FIG. 4A, since the solenoid coil 78 is energized to generate a pressing force that overcomes the pressing force of the return spring 79, the spool 77 is pressed against the return spring 79 side. It has been. In this state, the oil passage of the high pressure oil inlet 70d is connected to the magnetizing side oil inlet 70e, so that the high pressure oil that has entered from the high pressure oil inlet 70b is shown in the high pressure oil flow Ph. Then, the magnetic field magnetic flux of the rotor (not shown) is increased through the magnetizing side oil introduction port 70e.
Further, the oil pushed out from the demagnetization side hydraulic chamber of the rotor passes through the demagnetization side oil return port 70h from the demagnetization side oil introduction port 70f and returns to the return oil outlet 70c as shown in the return oil flow Pl. And returned to an oil pump (not shown).

FIG. 4B shows a state where the state of the magnetic field flux of the rotor is maintained as described above. The energization of the solenoid coil 78 is adjusted so that a pressing force that balances the pressing force of the return spring 79 is generated in the solenoid coil 78, and the spool 77 is in an intermediate position. In this state, since the oil passage is not connected to the magnetizing side oil introducing port 70e and the demagnetizing side oil introducing port 70f, the high pressure oil introducing port 70d has no high pressure oil that has entered from the high pressure oil inlet 70b. As shown in the high-pressure oil flow Ph, the operation is interrupted by the control valve 76 and the operation of changing the field magnetic flux of the rotor (not shown) is not performed.
However, in this state, the field magnetic flux of the rotor gently changes to the demagnetization side due to a structure described separately.

FIG. 5 is a cross-sectional view showing the structure of the pressure accumulating chamber.
In FIG. 5, the pressure accumulating chamber 70 a is formed by a piston 72, a spring 74, and a spring holding part 75 in a part of the anti-load side bracket. The spring holding part 75 has a wrench hole 75a of the spring holding part 75, and is fixed to a part of the anti-load side bracket with a screw part 75b of the spring holding part 75. Since the piston 72 is provided with an O-ring 73 for preventing oil leakage, high pressure oil is supplied to the pressure accumulating chamber 70a within a specified amount in accordance with the pressure of high pressure oil introduced from an oil pump (not shown). Can be stored.
In general, an oil pump (not shown) is in a low output state due to the action of an unload valve or the like when high-pressure oil is not supplied to the hydraulic mechanism. High pressure oil cannot be introduced into the magnetizing side hydraulic chamber or the demagnetizing side hydraulic chamber of the rotor. In order to improve the response of introducing hydraulic pressure, it is necessary to increase the maximum output in order to improve the startability of the oil pump.
In the hydraulic control unit of the present embodiment having the pressure accumulating chamber 70a, when the control valve operates, first, as shown in the flow of high-pressure oil Ph1 in the pressure accumulating chamber 70a, the high-pressure oil stored in the pressure accumulating chamber 70a is first removed. The high-pressure oil introduced from the oil pump is introduced into the high-pressure oil introduction port 70d leading to the control valve (not shown), and then the high-pressure oil flow Ph2 introduced from the oil pump. Since it is led to the port 70d, the maximum output of the oil pump can be saved, and the field magnetic flux of the rotor can be changed with good responsiveness. In FIG. 5, 70j is a control valve mounting hole, and 70k is a check valve inlet.

FIG. 6 is a cross-sectional view showing the structure of the check valve in the first embodiment of the present invention.
A check valve may be provided in the hydraulic control unit as a protection mechanism against excessive hydraulic pressure of oil guided from the outside. This is to protect the hydraulic control unit against an excessive hydraulic pressure that is generated when an oil pump (not shown) or other hydraulic equipment is started and stopped.
In FIG. 6, the check valve is provided so as to communicate a high-pressure oil passage 70m and a return oil passage 70n, which are formed in a part of the anti-load side bracket. In the check valve, a steel ball 80 is disposed as a valve body at a check valve inlet 70k provided to communicate the high-pressure oil passage 70m and the return oil passage 70n, and the check valve spring 81 and the check valve spring are held. The part 82 and the steel ball 80 are pressed against the check valve inlet 70k.
If excessive hydraulic pressure is generated in the high-pressure oil passage 70m, the pressure acting on the steel ball 80 exceeds the pressing force of the check valve spring 81, and the steel ball 80 moves to the check valve spring side. By shortcutting to the return oil passage 70n and reducing the hydraulic pressure, excessive hydraulic pressure is prevented from reaching the hydraulic control section.
The check valve spring holding part 82 is fixed to a part of the anti-load side bracket with a screw part 82a of the check valve spring holding part, and the pressing force of the check valve spring 81 is adjusted by adjusting the tightening position of the screw part. The cut-off hydraulic pressure of the high-pressure oil passage 70m can be set.

FIG. 7 is a perspective view showing rotation for changing the field magnetic flux of the rotor.
In FIG. 7, the rotor includes a load side magnetic pole part 100a divided into three in the axial direction, a central magnetic pole part 100b, and an antiload side magnetic pole part 100c, and the load side magnetic pole part 100a and the antiload side The magnetic pole part 100 c is fixed to the shaft 101 with a bolt 108, and the central magnetic pole part 100 b is rotated with respect to the shaft 101.
Each of the three magnetic pole portions 100a, 100b, and 100c has 10 magnetic poles in which N poles and S poles are alternately arranged in the circumferential direction, and the central magnetic pole portion 100b is rotated Ri to the magnetizing side. When the same magnetic poles are arranged in the axial direction, the rotor field magnetic flux is in the maximum state. When the central magnetic pole portion 100b is rotated as indicated by rotation Rd toward the demagnetization side and different magnetic poles are arranged in the axial direction, the field magnetic flux of the rotor is in a minimum state.
In the state where the rotor field magnetic flux is maximum, high torque can be generated. However, since the induced voltage with respect to the rotational speed is large, the power source can only be operated in a low rotational range. In the minimum state where the rotor field magnetic flux is not zero, only a low torque can be generated. However, since the induced voltage with respect to the rotational speed is small, the power supply can be operated up to a high rotational speed range. The magnetic pole portion 100b in the center of the rotor of this embodiment can be rotated by one magnetic pole, and the torque from a low rotation to a high rotation can be obtained by rotating it to an arbitrary position using a hydraulic mechanism. And the induced voltage can be adjusted to achieve both high performance such as torque increase and operation up to the high rotation range.
In the rotor of this embodiment, an attractive force or repulsive force close to 1 ton acts between the load side magnetic pole part or the anti-load side magnetic pole part and the central magnetic pole part. Or the repulsive force acts on the central magnetic pole part from both sides and cancels out. Therefore, the central magnetic pole part 100b is not attracted to one of the magnetic pole parts on both sides, and the generation of friction torque that hinders rotation is generated. Can be prevented.
A part of the oil used in the hydraulic mechanism that performs the rotation is discharged to the outside of the rotor after being used for lubrication of the sliding portion between the magnetic pole portions. Since the oil film is easily formed on the two sliding surfaces without being attracted to one of the magnetic pole portions on both sides, the hydraulic mechanism can rotate the central magnetic pole portion 100b with a minimum hydraulic pressure. Further, since the volume of the hydraulic chamber may be small, the rotor has a high degree of design freedom and can be designed in a realistic structure.
The outer peripheral shape of the rotor core 104 is not a perfect circle, but has a shape that brings the temporal change of the induced voltage induced in the stator winding (not shown) closer to a sine wave. Since it becomes a sine wave, the induced voltage is maintained close to a sine wave regardless of the position of the central magnetic pole part 100b, and the harmonics of the terminal voltage and torque fluctuation generated by the rotating electrical machine are reduced. Can do.

FIG. 8 is an exploded perspective view showing the structure of the rotor.
In FIG. 8, the load-side magnetic pole part 100a and the anti-load-side magnetic pole part 100c are fixed to the bolt hole 101a of the shaft by bolts 108. By introducing high-pressure oil into the magnetizing side hydraulic chamber 105a or the demagnetizing side hydraulic chamber 105b provided inside the movable plate 105 that supports the central magnetic pole portion 100b, the central magnetic pole portion 100b It is the structure rotated with respect to.
Since the shim 111 is provided between the load-side magnetic pole part 100a and the anti-load-side magnetic pole part 100c that rotate relative to each other, and the central magnetic pole part 100b, the permanent magnet 102 jumps out to the magnetic pole part sliding surface, and the relative rotation occurs. You can prevent contact when.
Since the material of the shim 111 is made of an iron alloy, which is a ferromagnetic material, it has excellent wear resistance, and when the field magnetic flux is minimum as shown in FIG. Since the magnetic flux passing through the stator core is further reduced by helping the action of shortcut in the axial direction, the iron loss generated in the stator core can be further reduced. However, if you want to increase the torque when the rotor field flux is at a maximum, rather than lowering the iron loss when the rotor field flux is at a minimum, the shim is made of a weak magnetic material. In some cases, the leakage magnetic flux of the permanent magnet is reduced by using SUS316 or ceramic which is a nonmagnetic material.

FIG. 9 is an exploded perspective view showing the structure of the central magnetic pole portion and the shaft of the rotor.
In FIG. 9, when the central magnetic pole part 100b is rotated to the magnetizing side, it is provided on the wall surface of the shaft constituting the magnetizing side hydraulic chamber 105a inside the movable plate 105 that supports the central magnetic pole part 100b. High pressure oil is introduced into the magnetizing side oil inlet 101e of the shaft 101 from the magnetizing side oil inlet 101c of the shaft.
When the central magnetic pole portion 100b is rotated to the demagnetization side, the shaft demagnetization side oil inlet 101f is connected to the shaft demagnetization side oil introduction port 101f provided on the wall surface of the shaft constituting the demagnetization side hydraulic chamber 105b. From 101d, high-pressure oil is introduced.
On the sliding surface of the shaft 101 and the movable plate 105, a hydraulic seal part 109 made of polyurethane elastomer is mounted on the hydraulic seal part 101b of the shaft and the hydraulic seal part 105c of the movable plate, and from the high pressure hydraulic chamber to the low pressure hydraulic chamber. Oil leakage to the
The permanent magnet 102 mounted on the rotor is mounted in the permanent magnet mounting hole 104a of the rotor core together with the resin component 103 adjacent to the outer side in the radial direction of the permanent magnet.

FIG. 10 is an exploded perspective view showing the structure of the non-load-side magnetic pole portion of the rotor.
In FIG. 10, the anti-load side magnetic pole portion is configured by an anti-load side stator plate 107, a spacer 112, and a rotor core on which a permanent magnet and a resin component are mounted. The permanent magnet 102 mounted on the rotor is mounted in the permanent magnet mounting hole 104a of the rotor core together with the resin component 103 adjacent to the outer side in the radial direction of the permanent magnet. It is the same.

FIG. 11 is an explanatory view showing shapes of the rotor core and resin parts.
In FIG. 11, since the resin component 103 has a cross-sectional shape formed by a flat surface 103a that is in close contact with the permanent magnet and a curved surface 103b that is in close contact with the outer joint portion 104b of the permanent magnet mounting hole of the rotor core, The acting centrifugal force G can be converted into the tensile force F of the outer joint portion.
The shape of the outer connecting portion 104b of the rotor core on which the permanent magnet 102 and the resin component 103 are mounted has a corner and a portion formed in a uniform width W, so that leakage magnetic flux is kept small. The tensile force F acting on the outer joint part does not concentrate on a part of the outer joint part, and acts uniformly as the maximum tensile stress on the part formed in a uniform width of the outer joint part. Is possible.
The harmonics of the terminal voltage and torque fluctuation generated by the rotating electrical machine can be adjusted by appropriately selecting the size of the chamfer R outside the permanent magnet mounting hole 104a of the rotor core.

FIG. 12 is an explanatory view of the shape of a conventional rotor core for explaining the effect of the shape of the rotor core and the resin component of the present embodiment.
FIG. 12A shows a shape in which the outer connecting portion 104d of the rotor core is provided so as to surround the cross-sectional shape of the permanent magnet 102, and shows a case where the corner portion 102c has a small chamfer of the permanent magnet. The outer connecting portion 104f of the rotor core is provided with a uniform width, and although the effect of reducing the leakage magnetic flux is high, the centrifugal force G acting on the permanent magnet is sheared to the corner portion 104c of the outer connecting portion of the rotor core. Since it concentrates as the force E, the driving | operation to a high rotation area is difficult.
FIG. 12B shows the case of the corner portion 102c where the chamfering of the permanent magnet is large. In this case, since the centrifugal force G acting on the permanent magnet concentrates as the bending force M on the corner 104c of the outer connecting portion of the rotor core, it is difficult to operate up to the high rotation range.
FIG. 12C shows a shape in which a permanent magnet receiving surface 104e is provided at the corner of the outer joint portion of the rotor core. The provision of the permanent magnet receiving surface 104e is intended to improve centrifugal resistance, but in this case, the centrifugal force G acting on the permanent magnet acts as a compressive load on the permanent magnet receiving surface 104e, As a reaction, the contact part 102d of the rotor core of the permanent magnet with the permanent magnet receiving surface is easily broken, and it is difficult to operate up to a high rotation range. Further, since the portion formed in the bottleneck of the outer connecting portion 104f of the rotor core is shortened, there is a disadvantage that the amount of the leakage magnetic flux L is increased.
Eventually, in order to enable operation up to a high rotational speed range, it is necessary to devise a device that uniformly distributes the centrifugal force G acting on the permanent magnets and acts on the outer connecting portion. The above-mentioned effect is achieved by using a resin component having the above, and the allowable stress applied to the material is converted into the largest tensile force, which enables operation up to a higher rotation range.

13 is an enlarged view of a part of the exploded perspective view showing the structure of the rotor shown in FIG.
In FIG. 13, the magnetic pole portion 100b at the center of the rotor has a mechanism for gently rotating to the demagnetization side when the hydraulic mechanism is not operating to change the field magnetic flux. This is to reduce the induced voltage of the rotating electrical machine and prevent secondary disasters such as dielectric breakdown when the hydraulic control unit is out of order or cannot be controlled. The torque for gently rotating the central magnetic pole portion 100b to the demagnetization side is generated by the attraction force of the permanent magnet between the magnetic pole portions with the opposite load side magnetic pole portion or anti-load side magnetic pole portion. No special equipment is required to prevent the next disaster.
Since the rotor is provided with an orifice 105d for adjusting oil leakage from the magnetizing hydraulic chamber to the demagnetizing hydraulic chamber at the end face of the movable plate 105 facing the fixed plate 107 on the anti-load side, the passage of the orifice By adjusting the area, the speed at which the central magnetic pole portion gently rotates toward the demagnetization side can be adjusted.

FIG. 14 is a side sectional view of the rotor.
In FIG. 14, since a part of oil used for the hydraulic mechanism is used for lubricating the bearing, it is not necessary to enclose grease in the bearing, and the friction torque accompanying the rotation of the rotor is small.
The oil 54f used for lubrication of the anti-load side bearing 54 which is the oil injection side into the shaft is supplied from the fitting gap between the fitting part 71 and the shaft 101 for supplying oil to the shaft 101 shown in FIG. Is done. As for the oil 53f used for lubrication of the load side bearing 53 that is not on the oil injection side into the shaft 101, the oil guided to the bearing portion in the shaft 101 is discharged to the back surface of the load side bearing 53, and the load side bearing 53 Used for lubrication.
The rotor is provided with a reciprocating oil path for rotating the central magnetic pole part 100 b on the outer side and the inner side of the cylindrical part 110 mounted in the shaft 101.
When the central magnetic pole portion 100b is rotated to the magnetizing side, the oil introduced from the magnetizing side oil inlet 101c of the shaft 101 passes through the magnetizing side oil passage 110a provided inside the cylindrical part 110. The shaft 101 is led from the magnetizing side oil introduction port 101e to the magnetizing side hydraulic chamber. On the other hand, the oil pushed out from the demagnetization side hydraulic chamber to the demagnetization side oil introduction port 101f passes through the demagnetization side oil passage 110b provided outside the cylindrical part 110, and then the demagnetization side oil inlet 101d of the shaft 101. More discharged.
When the central magnetic pole portion 100b is rotated to the demagnetization side, the oil introduced from the demagnetization side oil inlet 101d of the shaft 101 passes through the demagnetization side oil passage 110b provided outside the cylindrical part 110. The demagnetization side oil introduction port 101f of the shaft 101 is led to the demagnetization side hydraulic chamber. On the other hand, the oil pushed out from the magnetizing side hydraulic chamber to the magnetizing side oil introduction port 101e passes through the magnetizing side oil passage 110a provided inside the cylindrical part 110, and passes through the magnetizing side oil inlet 101c of the shaft. Discharged.
Each oil passage prevents oil leakage by O-rings 113, 114 and 115.
As described above, since the cylindrical part 110 is mounted in the shaft, an inexpensive reciprocating oil passage can be realized without requiring complicated processing on the shaft, and the rotation of the present embodiment can be realized by providing the reciprocating oil passage. The electric machine realizes field control with good controllability for both magnetizing and demagnetizing.
Since the orifice 53 for adjusting the amount of load oil is provided in the middle of the oil passage 101g where the oil 53f used for lubrication of the load side bearing reaches the back of the bearing in the shaft 101, by adjusting the passage area of the orifice, The oil amount to the bearing can be adjusted while maintaining the hydraulic pressure in the hydraulic chamber. The orifice 117 is made of a resin molded integrally with the filter, and the filter is provided to prevent clogging of the orifice having a small passage.
Similarly, a filter 116 is provided to prevent clogging of the orifice 105d that adjusts oil leakage from the magnetizing hydraulic chamber to the demagnetizing hydraulic chamber shown in FIG.

FIG. 15 is a structural diagram of the rotating electrical machine around the anti-load side bearing, (a) is a side sectional view of the main part showing the periphery of the anti-load side bearing, and (b) is a fitting part (a). It is a front sectional view of the important section seen from the arrow C direction.
In FIG. 15, the fitting component 71 that supplies oil to the shaft 101 from the non-load side bearing portion is fitted with the anti-load side bracket 52 that holds the outer diameter of the fitting component as compared with the fitting gap with the shaft. Since the joint gap is large, the fitting part 71 can move so as to maintain the coaxiality with which the minimum oil film can be held with respect to the shaft against the coaxiality deviation between the inner diameter of the anti-load side bracket and the shaft. It is said. That is, as shown in the axial view J, when there is a deviation in the degree of coaxiality between the shaft 101 and the fitting part holding portion 52a of the anti-load side bracket, the fitting part 71 has a large gap on the outside. The minimum oil film with the shaft 101 can always be formed by the static pressure or dynamic pressure of the oil. Therefore, it is possible to realize a rotating electrical machine having a small friction torque accompanying the rotation of the rotor.
The oil 54f used for lubricating the non-load side bearing is supplied from the fitting gap between the fitting component 71 and the shaft. The oil does not enter the rotor, is discharged to the outside of the rotor, and is further discharged to the outside of the rotating electrical machine.

FIG. 16 is a structural view around another anti-load-side bearing for explaining the effect of releasing a part of the oil to the outside of the rotor.
If a part of the oil used in the hydraulic mechanism is not discharged to the outside of the rotor, the fitting part 121 that supplies oil to the shaft 101 adjacent to the anti-load side bearing 125 as shown in the figure. In order to prevent oil leakage, an O-ring 124 is necessary, and it is desirable to provide an O-ring 122 and an O-ring 123 as well. The three O-rings 122, 123, and 124 always have sliding resistance with the rotating shaft 101, and the anti-load side bearing 125 also needs to be a grease-enclosed type bearing because there is no oil used for lubrication. As a result, the loss torque increases. These loss torques do not pose a significant problem when the rotating electrical machine rotates at a low speed and a high torque. However, when the rotating electrical machine rotates at a high speed, the loss torque becomes a major factor for reducing the efficiency, and countermeasures for heat generation become a serious issue.
In the rotating electrical machine of the present embodiment, part of the oil used in the hydraulic mechanism is released to the outside of the rotor and used for bearing lubrication, thereby reducing the loss torque.

FIG. 17 is a radial cross-sectional view of the hydraulic mechanism of the rotor shown in FIG.
In FIG. 17, shaft chamfers 101 h and 101 j that prevent the wall surface from sticking to the side wall in the rotational direction of the hydraulic chamber of the rotor are provided on both sides of the bolt hole 101 a of the shaft 101. Even in the state where the field magnetic flux of the rotor shown in (a) is maximum, the demagnetizing side hydraulic chamber 105b does not impair the area of the hydraulic pressure receiving surface due to close contact with the side wall in the rotational direction. The oil can be reliably rotated to the demagnetization side by the oil pressure from the inlet 105f. Further, even when the field magnetic flux of the rotor shown in (b) is at a minimum, the side wall in the rotational direction of the hydraulic chamber 105a on the magnetizing side is in close contact, and the area of the hydraulic pressure receiving surface is not impaired, and the magnetizing side With the pressure of oil from the oil inlet 105e, it can be reliably rotated to the side of increasing the magnet.

FIG. 18 is an explanatory view of the structure around the load side bearing of the hydraulic field control rotating electrical machine shown in FIG. 1, in which (a) is a front view seen from the anti-load side with the shaft 101 and the load side bearing 53 removed. It is a figure, (b) is a sectional side view around a load side bearing.
In FIG. 18A, the oil used in the hydraulic mechanism released into the motor chamber adheres to the rotating rotor, scatters to the load side bracket 51 by centrifugal force, and is located above the anti-load side bearing 53. A part of the rib 51a is guided to the left rib 51a and the upper right rib 51b, and a part of the rib 51a reaches the back surface of the load side bearing 53 through the oil introduction port 51c shown in FIG. Oil 51d. According to this structure, it is not necessary to enclose grease in the load-side bearing 53, and a rotating electrical machine with a small friction torque accompanying the rotation of the rotor can be realized.
In this structure, when the rotating electrical machine is operated without using the hydraulic field control, the shortage of supply amount of the oil 53f used for lubricating the load side bearing 53 from the shaft 101 shown in FIG. 14 is compensated. Is provided.

As described above, according to the hydraulic field control rotating electrical machine of this embodiment, both high performance such as torque increase and operation up to a high rotation range are compatible, controllability is good, iron loss, and rotation of the rotor are accompanied. It is possible to provide a hydraulic field control rotating electrical machine that has a small friction torque, is realistic, and has a high degree of design freedom.
The portion where the present invention is different from Patent Document 1 is a portion in which the rotor of the embedded magnet structure is divided in the axial direction instead of inward and outward.
The portion of the present invention that differs from Patent Document 2 is a portion that has been devised for practical problems such as the method of injecting and discharging oil to the shaft, the sealing method, and the generated friction torque.
The portion where the present invention is different from Patent Document 3 is a portion in which the field magnetic flux of the rotor is changed using hydraulic pressure, not centrifugal force due to rotation of the rotor.
The part where the present invention is different from Patent Document 4 is that the centrifugal force of the permanent magnet mounted on the rotor core is not received by a part of the stator core, but resin parts adjacent to the outer side in the radial direction of the permanent magnet are used. It is the part which was made to distribute and acted on the outer joint part of the stator core.

FIG. 19 is a cross-sectional view in the axial direction of a hydraulic field control rotating electrical machine showing a second embodiment of the present invention for use in a vehicle drive motor or generator.
In FIG. 19, the bearing portion of the anti-load side bracket 134 is integrally provided with a hydraulic control unit 140 that changes the field magnetic flux of the rotor 130, and is close to the rotor. The balance between performance and operation up to a high rotational speed range provides good responsiveness, and the oil passage connected to the rotating electrical machine only needs to maintain a constant hydraulic pressure. It is the same as the hydraulic field controlled rotating electrical machine shown in the first embodiment that the pipe loss can be avoided and the hydraulic field controlled rotating electrical machine has good controllability.
The anti-load side bracket 134 has a high-pressure oil inlet 135 that supplies oil from an external oil pump (not shown) to the hydraulic control unit 140, and oil that has been discharged from the rotor 130 into the rotating electrical machine to the oil pump. A discharge oil outlet 136 for discharging is provided, and the oil can circulate between the oil pump and the rotating electric machine, and can be continuously operated.
The rotor 130 has a load side magnetic pole part 130a divided into three in the axial direction, a central magnetic pole part 130b, and an antiload side magnetic pole part 130c, and the load side magnetic pole part 130a and the antiload side magnetic pole part 130c. Is fixed to the shaft 131 with a bolt, and the central magnetic pole portion 130b is rotated with respect to the shaft 131, which is the same as the hydraulic field controlled rotating electric machine shown in the first embodiment.
The rotor has a magnetizing side oil passage 131b that guides oil to a hydraulic mechanism that rotates the magnetic pole portion 130b at the center, and a demagnetization side oil passage 131c that discharges oil to the outside of the rotor. Yes.
The steel ball 137 is used as a plug after processing the oil passage.
When the central magnetic pole portion 130b is rotated to the magnetizing side, the oil introduced from the magnetizing side oil inlet 131a of the shaft passes through the magnetizing side oil passage 131b provided in the center of the shaft and increases the shaft. It is led from the magnetic side oil introduction port 131d to the magnetizing side hydraulic chamber. On the other hand, the oil pushed out from the demagnetization side hydraulic chamber to the demagnetization side oil inlet 131e is discharged to the back surface of the load side bearing 142 from the demagnetization side oil passage 131c provided in the center of the shaft, Used for lubrication.
The orifice 105d shown in FIG. 13 for adjusting the oil leakage from the magnetizing hydraulic chamber to the demagnetizing hydraulic chamber is provided on the end surface of the movable plate 105 facing the fixed plate 107 on the anti-load side. This is the same as the hydraulic field controlled rotating electric machine shown in the first embodiment, and the speed at which the central magnetic pole portion gently rotates toward the demagnetizing side can be adjusted by adjusting the passage area of the orifice. In the hydraulic field control rotating electrical machine provided to the vehicle driving motor or the generator according to the present embodiment, it is necessary to rapidly change the field magnetic flux of the rotor, for example, within 3 seconds from the maximum state to the minimum state. Therefore, unlike the hydraulic field control rotating electric machine shown in the first embodiment, it is not necessary to provide an oil passage for introducing high-pressure oil into the demagnetization side hydraulic chamber, and a simple and inexpensive hydraulic field control rotating electric machine is provided. Will be able to.
The oil used for lubrication of the anti-load side bearing 141 which is the oil injection side into the shaft is supplied from the fitting gap between the fitting part 133 which supplies oil to the shaft and the shaft. Oil used for lubrication of the load-side bearing 142 that is not on the oil injection side into the shaft passes through the orifice 132 from the magnetizing-side oil passage 131b in the shaft, and passes through the orifice 132 to the load-side bearing 142 from the demagnetizing-side oil passage 131c. It is discharged to the back surface and used for lubrication of the load side bearing. By adjusting the passage area of the orifice 132, the amount of oil to the bearing can be adjusted while maintaining the hydraulic pressure in the hydraulic chamber.

FIGS. 20A and 20B are explanatory views showing a hydraulic control unit according to the second embodiment of the present invention, in which FIG. 20A shows a state in which the field magnetic flux of the rotor is increased, and FIG. 20B shows the rotor field. This shows a state where the magnetic flux is gently demagnetized.
In FIG. 20, the hydraulic control unit that changes the field magnetic flux of the rotor includes a pressure accumulating chamber 140a for accumulating oil introduced from the outside, and a control valve 151 for conducting and blocking hydraulic pressure to the rotor.
The control valve 151 can move the plunger 152 in the axial direction by energizing the solenoid coil 153, and conducts the high-pressure oil that has entered from the high-pressure oil inlet 140b to the magnetizing side oil inlet 140c. Or can be blocked.
The state shown to (a) has shown the state which is magnetizing the field magnetic flux of a rotor as mentioned above. Since the solenoid coil 153 is energized and an attractive force that overcomes the pressing force of the return spring 154 is generated in the solenoid coil, the plunger 152 is pressed against the return spring side. In this state, the valve oil passage 151a is opened, and the high-pressure oil that has entered from the high-pressure oil inlet 140b passes through the magnetizing side oil introduction port 140c, as shown in the high-pressure oil flow Ph, and is not shown. The field magnetic flux is increased.
The state shown in (b) shows a state where the field magnetic flux of the rotor is gently demagnetized. The solenoid 152 is not energized, and the plunger 152 is pressed against the valve oil passage 151a by the pressing force of the return spring 154. In this state, the valve oil passage 151a is closed, and the high-pressure oil that has entered from the high-pressure oil inlet 140b does not reach the magnetizing-side oil inlet 140c. The magnetic field flux of the rotor is gently demagnetized according to the amount of oil leakage at the orifice 105d for adjusting oil leakage to the shaft and the orifice 132 in the shaft.

FIG. 21 is a perspective view showing a state in which the field magnetic flux of the rotor is minimum.
In FIG. 21, the rotor includes a load side magnetic pole portion 130 a that is divided into three in the axial direction, a central magnetic pole portion 130 b, and an antiload side magnetic pole portion 130 c, and the load side magnetic pole portion 130 a and the antiload side The structure in which the magnetic pole portion 130c is fixed to the shaft 131 with a bolt 155 and the central magnetic pole portion 130b is rotated with respect to the shaft is the same as that of the hydraulic field control rotating electric machine shown in the first embodiment.
The magnetic pole portion 130b at the center of the rotor of this embodiment rotates gently toward the demagnetization side when hydraulic control is not performed, and as shown in the figure, the N pole and the S pole do not completely cancel each other. The rotation range is limited so that the minimum field magnetic flux that operates as an electric machine is obtained.

FIG. 22 is a radial cross-sectional view of the rotor.
In FIG. 22, the hydraulic mechanism 157 for changing the field magnetic flux of the rotor is provided on the inner periphery of the rotor core, which is the same as the hydraulic field control rotating electric machine shown in the first embodiment.
Rotation of the bolt hole 131f of the shaft constituting the side wall in the rotation direction of the hydraulic chamber in order to limit the rotation range so that the field magnetic flux of the rotor becomes the minimum field magnetic flux that operates as a rotating electric machine. The thickness of the direction is increased to limit the rotation range of the rotation plate 138. Therefore, it is possible to provide a hydraulic field control rotating electrical machine that can be driven even when the hydraulic control unit fails.
The state in which the field magnetic flux of the rotor of the present embodiment is maximum is a state in which the central magnetic pole portion is rotated to the magnetizing side and the same magnetic pole is aligned in the axial direction. Since the cogging torque of the rotating electric machine of the example is 60 cycles for one rotation of the rotor, in order to reduce the maximum cogging torque, the central magnetic pole part and the magnetic pole parts on both sides are shifted by 3 °. You may restrict | limit the rotation range from which a field magnetic flux will be in the maximum state.

  The present invention is different from the first embodiment in that an oil passage that guides high-pressure oil to a hydraulic mechanism that relatively rotates the magnetic pole portion is provided in the shaft only on the magnetizing side instead of the reciprocating oil passage.

  The present invention also applies to a frameless rotating electric machine having no frame, a rotating electric machine having an outer frame in which a bracket and a frame are integrated, a rotating electric machine in which a frame and a stator core are molded into an integral structure with magnetic powder, and the like. Can be applied.

  The hydraulic field-controlled rotating electrical machine of the present invention achieves both high performance such as torque increase and operation up to a high rotation range, has good controllability, and has low iron loss and friction torque accompanying rotation of the rotor. Since the degree of freedom of design is large, it can be applied to a wind power generator.

It is a sectional side view which shows the hydraulic field control rotary electric machine in 1st Example of this invention. FIG. 2 is a front sectional view of the rotating electrical machine shown in FIG. It is a block diagram which shows the hydraulic control part of the rotary electric machine in 1st Example of this invention. 4A and 4B are explanatory views showing the hydraulic control unit shown in FIG. 3, in which FIG. 3A shows a state in which the field magnetic flux of the rotor is increased, and FIG. It shows the state. It is sectional drawing which shows the structure of the pressure accumulation chamber in 1st Example of this invention. It is sectional drawing which shows the structure of the check valve in 1st Example of this invention. It is a perspective view which shows the rotation which changes the field magnetic flux of the rotor in 1st Example of this invention. It is a perspective view of the decomposition | disassembly state which shows the structure of the rotor in 1st Example of this invention. It is a perspective view of the decomposition | disassembly state which shows the structure of the magnetic pole part and shaft of the center of the rotor in 1st Example of this invention. It is a perspective view of the decomposition | disassembly state which shows the structure of the anti-load side magnetic pole part of the rotor in 1st Example of this invention. It is explanatory drawing which shows the shape of the rotor core and resin component in 1st Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the shape of the conventional rotor core for demonstrating the effect of the shape of the rotor core and resin part in 1st Example of this invention, (a) surrounds the cross-sectional shape of the permanent magnet 102. The shape which provided the outer connection part of the rotor core is shown, and the case where the chamfer of a permanent magnet is small is shown. (B) has shown the case of the corner | angular part where the chamfer of a permanent magnet is large. (C) has shown the shape which provided the permanent magnet receiving surface in the corner part of the outer side connection part of a rotor core. It is a partial enlarged view of the perspective view of the decomposition | disassembly state which shows the structure of the rotor in 1st Example of this invention. It is a sectional side view of the rotor in the 1st example of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a structural diagram around an anti-load side bearing in a first embodiment of the present invention, in which (a) is a side sectional view of an essential part showing an anti-load side bearing and (b) is a fitting part; It is a front sectional view of the important section seen from the arrow C direction. FIG. 6 is a structural diagram around another anti-load-side bearing in the first embodiment of the present invention. 1 shows a hydraulic mechanism of a rotor in a first embodiment of the present invention, in which (a) shows a state in which the field magnetic flux of the rotor is maximum, and (b) shows a state in which the field magnetic flux of the rotor is minimum. Is shown. FIG. 2 is an explanatory view of the structure around the load side bearing of the hydraulic field control rotating electrical machine shown in FIG. 1, (a) is a front view seen from the anti-load side with the shaft and the load side bearing removed; ) Is a side sectional view around the load side bearing. It is a sectional side view which shows the hydraulic field control rotary electric machine in the 2nd Example of this invention. FIG. 5 is an explanatory diagram showing a hydraulic control unit according to a second embodiment of the present invention, where (a) shows a state in which the field magnetic flux of the rotor is increased, and (b) shows a gentler magnetic field flux of the rotor. Shows a demagnetized state. It is a perspective view which shows the state with the minimum field magnetic flux of the rotor in the 2nd Example of this invention. It is a front sectional view of the rotor in the 2nd example of the present invention. FIG. 6 is a front sectional view showing an electric motor similar to the hydraulic field control rotating electric machine in the first conventional technique. It is a front sectional view showing a hydraulic field control rotating electrical machine in the second prior art. It is a figure which shows the rotor of the field control rotary electric machine which does not use the hydraulic pressure in the 3rd prior art, (a) is a perspective view, (b) is a front sectional view. It is a figure which shows the rotor core of the embedded magnet type rotary electric machine in 4th prior art, (a) is a figure which shows the shape of a permanent magnet mounting hole, (b) is an expanded sectional view of the A section in (a). It is.

Explanation of symbols

48 High-pressure oil inlet 49 Return oil outlet 50 Drained oil outlet 51 Load side bracket 51a Upper left rib 51b Upper right rib 51c Oil inlet 52 Anti-load side bracket 52a Anti-load side bracket fitting part holder 53 Load side bearing 54 Anti-load-side bearing 54f Oil used for lubrication of anti-load-side bearing 55 Load-side oil seal 56 Anti-load-side oil seal 57 Encoder 58 Cover 60 Stator 61 Lead wire 62 Stator winding 63 Stator core 64 Fixed Child fastening bolt 65 Frame 70 Hydraulic controller 70a Accumulation chamber 70b High pressure oil inlet 70c Return oil outlet 70d High pressure oil inlet 70e Magnetization side oil introduction port 70f Demagnetization side oil introduction port 70g Magnetization side oil return port 70h Demagnetization side Oil return port 70k Check valve inlet 70m High pressure oil passage 70n Return oil passage 71 Fitting component 71a Mating side oil passage 71b Fitting component Demagnetization side oil passage 72 Piston 73 O-ring 74 Spring 75 Spring holding part 76 Control valve 77 Spool 78 Solenoid coil 79 Return spring 80 Steel ball 81 Check valve spring 82 Check valve spring holding part 82a Screw part of check valve spring holding part 90 Hydraulic mechanism 100 Rotor 100a Load side magnetic pole part 100b Central magnetic pole part 100c Anti-load side magnetic pole part 101 Shaft 101a Shaft bolt hole 101b Shaft hydraulic seal part 101c Shaft magnetizing side Oil inlet 101d Shaft demagnetizing side Oil inlet 101e Shaft magnetizing side oil inlet 101f Shaft demagnetizing side oil inlet 101g Oil passage 101h to shaft bearing back in shaft Shaft of shaft 101j Chamfer of shaft 102 Permanent magnet 103 Resin component 10 Rotor core 104a Rotor core permanent magnet mounting hole 104b Rotor core outer joint 104p Rotor core pole shoe 105 Movable plate 105a Magnetization side hydraulic chamber 105b Demagnetization side hydraulic chamber 105c Movable plate hydraulic seal portion 106 Load-side fixing plate 107 Anti-load-side fixing plate 108 Bolt 109 Hydraulic seal component 110 Cylindrical component 110a Magnetization side oil passage 110b Demagnetization side oil passage 111 Shim 112 Spacer 113 O-ring 114 O-ring 115 O-ring 116 Filter 117 Orifice 118 O-ring 119 O-ring 120 O-ring Ph High-pressure oil flow Pl Return oil flow

Claims (26)

A fixed portion; and a rotating portion that rotatably supports the shaft via a bearing on the fixed portion,
The fixing portion includes a stator and a bracket to which the stator is fixed ,
In the hydraulic field control rotating electrical machine, the rotating unit includes a rotor having an embedded magnet structure that can change a field magnetic flux using hydraulic pressure.
The rotor is
A divided magnetic pole portion that rotates integrally with the shaft;
A hydraulic mechanism that is interposed between the magnetic pole portion and the shaft and rotates at least one of the magnetic pole portions with respect to the shaft using the hydraulic pressure;
With
A hydraulic control unit that changes the field magnetic flux of the rotor by supplying oil to the hydraulic mechanism through an oil passage provided in the shaft is provided inside the bearing portion of the bracket that supports the bearing. A hydraulic field control rotating electrical machine characterized by being provided. The hydraulic control unit includes a control valve for conducting block the oil to the hydraulic mechanism is provided in the middle portion of the oil passage from the outside to the control valve, and accumulates the guided externally oil accumulator with oil The hydraulic field-controlled rotating electrical machine according to claim 1, further comprising: a pressure accumulating chamber that supplies a pressure to the control valve . Claims, characterized in that the hydraulic control unit, provided with a check valve hydraulic oil derived from the outside to decompress the hydraulic pressure flowing the oil to another oil passage when it exceeds a predetermined hydraulic pressure 2. The hydraulic field control rotating electrical machine according to 2. Claim the magnetic pole is divided into three parts in the axial direction, on both sides of the magnetic pole portion is fixed to the shaft, the center of the magnetic pole portion is rotated relative to the shaft by the hydraulic mechanism, characterized in Rukoto The hydraulic field control rotating electrical machine according to any one of 1 to 3.   5. The hydraulic field control rotating electrical machine according to claim 4, wherein the rotor is provided with a shim between magnetic parts rotating relative to each other.   6. The hydraulic field control rotating electrical machine according to claim 5, wherein a material of the shim is a magnetic material and is made of iron or iron alloy. A fitting part that is interposed between the hydraulic control unit and the shaft and supplies oil supplied from the hydraulic control unit to an oil passage provided in the shaft ;
The fitting part is provided with a larger fitting gap with a fitting part holding portion of the bracket for holding the outer diameter of the fitting part than a fitting gap with the shaft. Item 7. The hydraulic field controlled rotating electrical machine according to any one of Items 1 to 6. The shaft is
A plurality of fixed side walls provided along a predetermined interval on the outer periphery of the shaft and extending along the shaft;
The hydraulic mechanism is
A cylindrical movable plate that slidably encloses the plurality of fixed side walls;
A plurality of movable side walls provided along the inner peripheral portion of the movable plate at predetermined intervals, extending along the shaft, and slidable with respect to the outer peripheral portion of the shaft;
And the oil is supplied to a hydraulic chamber formed by the outer peripheral portion of the shaft, the fixed side wall, the inner peripheral portion of the movable plate, and the movable side wall, and the movable side wall moves to move the magnetic pole portion. Rotate with respect to the shaft,
Wherein the movable side wall, the hydraulic field control rotating electrical machine according to any one of claims 1 7, characterized in that chamfering to prevent close contact with the wall surface of the fixed side walls have been made. Wherein said portion from the hydraulic control unit of the oil supplied to the hydraulic mechanism, which after being subjected to the lubrication of the sliding portion between the magnetic pole portions, characterized in that it is discharged to the outside of the rotor Item 9. The hydraulic field controlled rotating electrical machine according to any one of Items 1 to 8 . Some from the hydraulic control unit of the oil supplied to the hydraulic mechanism is released outside of the rotor, further to any of claims 1 to 9, wherein the is discharged to the outside of the rotary electric machine The hydraulic field control rotating electric machine according to item 1. The portion from the hydraulic control unit of the oil supplied to the hydraulic mechanism, the hydraulic field control rotary electric machine claimed in any one of 10, characterized in that it is used to lubricate the bearings. A fitting part that is interposed between the hydraulic control unit and the shaft and supplies oil supplied from the hydraulic control unit to an oil passage provided in the shaft;
Oil the hydraulic control unit is used to lubricate the side of the bearing is provided, the hydraulic field control rotating electrical machine according to claim 11, characterized in that it is provided from the fitting gap between the fitting part and the shaft . Oil the hydraulic control unit is used to lubricate the opposite side of the bearing to the side of the bearing to be provided, after being guided in the shaft to the bearing portion, the inner space of the rotary electric machine of the surfaces of the bearing the side surface is released on the opposite side hydraulic field control rotating electrical machine according to claim 11 or 12, characterized in that it is used to lubricate the said bearing. The oil from the bearing on the side where the hydraulic control unit is provided is used to lubricate the opposite bearing, it is released to the outside of the rotor attached to the rotor, scattered by the centrifugal force, the bearing the interior side surface of the rotary electric machine of the oil introduction port by Ri surface of the bearing formed in the bearing portion of the bracket which supports the, characterized in that Ru is guided on the surface opposite claim 13 Hydraulic field control rotating electrical machine as described in 1.   7. The magnetic pole part at the center of the rotor rotates gently toward the demagnetization side when the hydraulic mechanism is not operating to change the field magnetic flux. The hydraulic field control rotating electric machine according to item 1. 16. The hydraulic field control rotating electrical machine according to claim 15 , wherein the torque for gently rotating the magnetic pole portion at the center of the rotor is generated by the attraction force of the permanent magnet between the opposing magnetic pole portions. The reciprocating fluid passage for guiding the oil to the hydraulic mechanism, the hydraulic field control rotating electric machine according to any one of claims 1 to 16, characterized in that provided in said shaft. The rotor, the hydraulic field control rotating electrical machine according to claim 17, characterized in that said reciprocating fluid passage, provided outside and the inside of the mounted cylindrical parts into the shaft. 9. The hydraulic field control rotating electric machine according to claim 8 , wherein the rotor is provided with an orifice in the hydraulic mechanism for adjusting oil leakage from the hydraulic chamber to another adjacent hydraulic chamber . Serial oil to the side of the bearing hydraulic control unit is provided to be used for lubrication of the opposite bearing, the surface opposite to the inner space side of the surface of the rotating electrical machine of the surfaces of the inside of the shaft the bearing The hydraulic field-controlled rotating electrical machine according to claim 13 or 14 , wherein an orifice for adjusting oil leakage is provided in the middle of the oil path leading to the oil path.   21. The hydraulic field control rotating electrical machine according to claim 20, wherein a filter is provided in front of the orifice. Claims, characterized in that said the increase磁側oil passage from the hydraulic mechanism guides the oil to the hydraulic mechanism, the reduced磁側oil passage for guiding oil to the hydraulic control unit from the hydraulic mechanism, provided in said shaft The hydraulic field controlled rotating electrical machine according to any one of 1 to 21 .   The magnetic pole part at the center of the rotor of the rotating electrical machine rotates gently to the demagnetization side, and the N pole and the S pole do not cancel completely, and rotate so as to be the minimum field magnetic flux that operates as a rotating electrical machine. The hydraulic field-controlled rotating electrical machine according to any one of claims 4 to 6, wherein the range is limited. The hydraulic field control rotating electrical machine according to any one of claims 1 to 23, wherein the permanent magnet attached to the rotor is attached to the rotor core together with a resin component adjacent to the outside in the radial direction.   25. The hydraulic field control according to claim 24, wherein the resin component has a cross-sectional shape formed by a flat surface that is in close contact with the permanent magnet and a curved surface that is in close contact with the outer joint portion of the mounting hole of the rotor core. Rotating electric machine.   The shape of the outer connecting portion of the mounting hole of the rotor core on which the permanent magnet and the resin component adjacent to the outer side in the radial direction are mounted has no corner and has a portion formed in a uniform width. The hydraulic field control rotating electrical machine according to claim 25.

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